Optioservus

Optioservus is a genus of riffle beetles in the family Elmidae. There are about 13 described species in Optioservus.

Species

 * Optioservus browni White, 1978 (Brown's optioservus riffle beetle)
 * Optioservus canus Chandler, 1954 (pinnacles optioservus riffle beetle)
 * Optioservus castanipennis (Fall, 1925)
 * Optioservus divergens (LeConte, 1874)
 * Optioservus fastiditus (LeConte, 1850)
 * Optioservus heteroclitus White, 1978
 * Optioservus immunis (Fall, 1925)
 * Optioservus ovalis (LeConte, 1863)
 * Optioservus phaeus White, 1978 (Scott optioservus riffle beetle)
 * Optioservus quadrimaculatus (Horn, 1870)
 * Optioservus sandersoni Collier, 1972
 * Optioservus seriatus (LeConte, 1874)
 * Optioservus trivittatus (Brown, 1930)